Vastly undersampled time-resolved TOF MR angiography in mice with a prospective 3D radial double golden angle approach.
Aurlien Julien Trotier 1 , William Lefranois 1 , Emeline Julie Ribot 1 , Eric Thiaudire 1 , Jean-Michel Franconi 1 , and Sylvain Miraux 1
CNRS UMR5536, RMSB, Bordeaux, Aquitaine,
3D time-resolved cartesian TOF MR Angiography is a
powerful method to assess blood flow velocity.
Nevertheless total acquisition time required can be
prohibitive. The purpose of this work was to develop a
3D TOF MRA based on radial projection trajectories. A
first golden angle is used to uniformly distributed
projections along time and a second golden angle to
obtain different trajectories between cine images. The
efficiency and flexibility (retrospective filtering) of
this method was performed on mice model at 7T and shown
an acquisition time reduction of at least a factor 4 in
comparison to cartesian sampling.
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